/**
 * @format
 */

type TransformFunction = (key: string) => string;
type ValidateFunction = (key: string) => boolean;

interface Options {
  size?: number;
  prefix?: string;
  chartype?: "alpha" | "alphanum" | "numeric" | "symbols";
  charset?: string;
  transform?: "none" | "lower" | "upper" | TransformFunction;
  validate?: ValidateFunction;
  exclude?: string[];
}

export function generateKey(options: Options): string;